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NBS 16″ 6.8 SPC II M4 Contour 1:10 Carbine 41V50 Barrel – Parkerized
NBS 16″ 6.5 Grendel II M4 Contour 1:8 Carbine 416R Barrel – Straight Fluted – Black Nitride
NBS 16″ 5.56 Parkerized 1:8 Carbine Length Barrel
NBS 16″ 5.56 NATO Contour 1:7 Mid Length 416R Barrel – Stainless
NBS 16″ 5.56 NATO 1:8 Twist 4150V Black Nitride Mid-Length Barrel
NBS 16″ 5.56 HBAR 1:9 Twist Black Nitride Carbine Barrel
NBS 16″ 416R Stainless Steel M4 Contour Barrel, .300 Blackout, Carbine Length Gas System w/ 1:8 Twist
NBS 16″ 4150 Steel M4 Contour Barrel, .350 Legend, Carbine Length Gas System w/ 1:16 Twist Barrel
NBS 16″ .458 SOCOM Carbine Length Black Nitride Barrel
NBS 16″ .458 SOCOM Carbine Length 416R Stainless Steel Barrel
NBS 16″ .300 BLK Parkerized 1:8 Heavy Profile Carbine Length Barrel
NBS 16″ .300 BLK 1:8 Black Nitride Pistol Length Barrel
NBS 16″ .223 Wylde Lightweight Contour 1:8 Midlength 41V50 Barrel – Parkerized
NBS 16″ .223 Wylde Black Nitride 1:8 Midlength Barrel
NBS 16″ .223 Wylde 1:8 Parkerized Carbine Length Barrel
NBS 16 5.56 Heavy Contour Chrome Lined 1:7 Midlength Barrel w/ FSB ? Phosphate
NBS 16 5.56 Heavy Contour 1:7 Carbine Barrel w/ FSB ? Phosphate
NBS 14.5″ 7.62×39 1:10 Carbine Length Heavy Contour AR-15 Barrel – Parkerized
NBS 14.5″ 5.56 NATO Govt. Profile 1:7 Carbine 41V50 Barrel – Black Nitride
NBS 10.5″ 416R Stainless Steel M4 Contour Barrel, 5.56 NATO, Carbine Length Gas System w/ 1:8 Twist
NBS 10.5″ 4150 Black Nitride M4 Contour Barrel, .223 Wylde, Carbine Length Gas System w/ 1:8 Twist
NBS 10.5″ 300 Blackout Pistol Length 1:8 416R Stainless Steel Barrel
Fortis .223 Wylde Chamber Chrome Moly Barrel – 16″
Fortis .223 Wylde Chamber Chrome Moly Barrel – 14.5″
Dirty Bird Brand AR-15 Parts
